Merge pull request #23 from camilin87/master

Merge last changes to my branch
Added alike projects for any user (client, prof, etc)

Since clients, prof and head prof does not have a graduation_term they
will be able to join or leave any project of any term if it hasn't past
either the project end_date or the closed_requests date yet
Merge pull request #24 from camilin87/kmoya-dev-branch

Kmoya dev branch